linux-stable/fs/cifs/ioctl.c
Steve French c81156dd21 [PATCH] cifs: cleanup of ifdefs usage so it is more consistent
And fix to not needlessly send new POSIX QFSInfo when server does not
explicitly claim support for the new protocol extensions. 

Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-28 22:41:07 -07:00

112 lines
2.9 KiB
C

/*
* fs/cifs/ioctl.c
*
* vfs operations that deal with io control
*
* Copyright (C) International Business Machines Corp., 2005
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
#include <linux/ext2_fs.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"
#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
int cifs_ioctl (struct inode * inode, struct file * filep,
unsigned int command, unsigned long arg)
{
int rc = -ENOTTY; /* strange error - but the precedent */
int xid;
struct cifs_sb_info *cifs_sb;
#ifdef CONFIG_CIFS_POSIX
__u64 ExtAttrBits = 0;
__u64 ExtAttrMask = 0;
__u64 caps;
struct cifsTconInfo *tcon;
struct cifsFileInfo *pSMBFile =
(struct cifsFileInfo *)filep->private_data;
#endif /* CONFIG_CIFS_POSIX */
xid = GetXid();
cFYI(1,("ioctl file %p cmd %u arg %lu",filep,command,arg));
cifs_sb = CIFS_SB(inode->i_sb);
#ifdef CONFIG_CIFS_POSIX
tcon = cifs_sb->tcon;
if(tcon)
caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
else {
rc = -EIO;
FreeXid(xid);
return -EIO;
}
#endif /* CONFIG_CIFS_POSIX */
switch(command) {
case CIFS_IOC_CHECKUMOUNT:
cFYI(1,("User unmount attempted"));
if(cifs_sb->mnt_uid == current->uid)
rc = 0;
else {
rc = -EACCES;
cFYI(1,("uids do not match"));
}
break;
#ifdef CONFIG_CIFS_POSIX
case EXT2_IOC_GETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
if (pSMBFile == NULL)
break;
rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
&ExtAttrBits, &ExtAttrMask);
if(rc == 0)
rc = put_user(ExtAttrBits &
EXT2_FL_USER_VISIBLE,
(int __user *)arg);
}
break;
case EXT2_IOC_SETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
if(get_user(ExtAttrBits,(int __user *)arg)) {
rc = -EFAULT;
break;
}
if (pSMBFile == NULL)
break;
/* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
extAttrBits, &ExtAttrMask);*/
}
cFYI(1,("set flags not implemented yet"));
break;
#endif /* CONFIG_CIFS_POSIX */
default:
cFYI(1,("unsupported ioctl"));
break;
}
FreeXid(xid);
return rc;
}